瑞替加滨杂质3 | 1263404-73-4

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 中文名称: 瑞替加滨杂质3
• 英文名称: diethyl 4-(4-fluorobenzylamino)-1,2-phenylenedicarbamate
• 英文别名: ethyl N-[2-(ethoxycarbonylamino)-4-[(4-fluorophenyl)methylamino]phenyl]carbamate
• CAS: 1263404-73-4
• 化学式: C₁₉H₂₂FN₃O₄
• 分子量: 375.4
• InChiKey: KJAAUIZGNRJHKC-UHFFFAOYSA-N

物化性质

• 沸点：
  443.8±45.0 °C(Predicted)
• 密度：
  1.313±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.4
• 重原子数：
  27
• 可旋转键数：
  9
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.26
• 拓扑面积：
  88.7
• 氢给体数：
  3
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  正戊醛 、 瑞替加滨杂质3 在 三乙酰氧基硼氢化钠 、 溶剂黄146 作用下， 以 二氯甲烷 、 水 为溶剂， 生成
  参考文献：
  名称：

  Discovery of a retigabine derivative that inhibits KCNQ2 potassium channels

  摘要：

  雷替加宾是一种KCNQ2-5通道激活剂，目前用于治疗部分性癫痫发作。本研究旨在探讨雷替加宾结构修饰能否产生新型KCNQ2通道抑制剂，这些抑制剂对于KCNQ通道研究具有重要价值。设计并合成了系列雷替加宾衍生物，并在CHO细胞中表达了KCNQ2通道。采用全细胞电压钳技术记录KCNQ2电流，通过ALA 8通道溶液交换系统将测试化合物送入记录细胞的外液中。共合成并电生理测试了23个雷替加宾衍生物（HN31-HN410）。其中，HN38是KCNQ2通道的最强抑制剂（其IC50值=0.10±0.05 μmol/L），效力比经典的KCNQ抑制剂XE991高出7倍。进一步分析显示，HN38（3 μmol/L）对通道激活无明显影响，但在超极化电压下加速了通道的去激活过程。相比之下，XE991（3 μmol/L）对通道激活和去激活的动力学没有影响。雷替加宾衍生物HN38是一种强效的KCNQ2通道抑制剂，其在通道动力学上的影响与XE991不同。我们的研究为设计和开发强效KCNQ2通道抑制剂提供了新策略。

  DOI：

  10.1038/aps.2013.79
• 作为产物：
  描述：

  2-氨基-5-[(4-氟苄基)氨基]-1-硝基苯 在 氢气 、 N,N-二异丙基乙胺 作用下， 以 1,4-二氧六环 、 甲醇 为溶剂， 20.0 ℃ 、101.33 kPa 条件下， 反应 4.0h， 生成 瑞替加滨杂质3
  参考文献：
  名称：

  Discovery of a retigabine derivative that inhibits KCNQ2 potassium channels

  摘要：

  雷替加宾是一种KCNQ2-5通道激活剂，目前用于治疗部分性癫痫发作。本研究旨在探讨雷替加宾结构修饰能否产生新型KCNQ2通道抑制剂，这些抑制剂对于KCNQ通道研究具有重要价值。设计并合成了系列雷替加宾衍生物，并在CHO细胞中表达了KCNQ2通道。采用全细胞电压钳技术记录KCNQ2电流，通过ALA 8通道溶液交换系统将测试化合物送入记录细胞的外液中。共合成并电生理测试了23个雷替加宾衍生物（HN31-HN410）。其中，HN38是KCNQ2通道的最强抑制剂（其IC50值=0.10±0.05 μmol/L），效力比经典的KCNQ抑制剂XE991高出7倍。进一步分析显示，HN38（3 μmol/L）对通道激活无明显影响，但在超极化电压下加速了通道的去激活过程。相比之下，XE991（3 μmol/L）对通道激活和去激活的动力学没有影响。雷替加宾衍生物HN38是一种强效的KCNQ2通道抑制剂，其在通道动力学上的影响与XE991不同。我们的研究为设计和开发强效KCNQ2通道抑制剂提供了新策略。

  DOI：

  10.1038/aps.2013.79

文献信息

• [EN] PROCESS AND INTERMEDIATES FOR THE PREPARATION OF RETIGABINE<br/>[FR] PROCÉDÉ ET INTERMÉDIAIRES POUR LA PRÉPARATION DE RÉTIGABINE
  申请人：OLON SPA

  公开号：WO2013114315A1

  公开（公告）日：2013-08-08

  A method for the preparation of retigabine starting with intermediate III is disclosed, comprising the step of protecting the secondary amine of III with a protecting group followed by N-ethoxycarbonylation of the primary amino group of the product obtained. The preparation of retigabine is completed by steps comprising removal of the protecting group and reduction of the nitro group to amino, which can be performed in any order or simultaneously. Novel intermediates usable with said method are also described.

  揭示了一种以中间体III为起点制备雷替加宾的方法，包括以下步骤：用保护基保护III的次要胺，然后对所得产物的主要氨基进行N-乙氧羰基化。雷替加宾的制备通过包括去除保护基和将硝基还原为氨基的步骤完成，这些步骤可以按任何顺序或同时进行。还描述了可与该方法一起使用的新型中间体。
• [EN] PROCESS FOR THE PREPARATION OF RETIGABINE OF THE FORMULA I AND PHARMACEUTICALLY ACCEPTABLE SALTS THEREOF<br/>[FR] PROCÉDÉ DE PRÉPARATION DE RÉTIGABINE DE FORMULE I ET DE SES SELS PHARMACEUTIQUEMENT ACCEPTABLES
  申请人：ARCH PHARMALABS LTD

  公开号：WO2013011518A1

  公开（公告）日：2013-01-24

  The invention relates to process for the preparation of 2-amino-4-(4- fluorobenzylamino)-l-ethoxycarbonylaminobenzene generically known as Retigabine of the formula (I) and its pharmaceutically acceptable salts e.g. Formula IA, particularly to the modification over the prior art processes-I and II disclosed therein in US5384330. The modifications are depicted in the scheme I and scheme II respectively. Disclosed herein are also the novel processes for the preparation of intermediates of formulae M, N and O of the process-I and of formulae R, S, T of process-II, those are used for preparation of Retigabine of the formula I and its pharmaceutically acceptable salts thereof.

  该发明涉及一种制备2-氨基-4-(4-氟苄胺基)-1-乙氧羰基氨基苯的方法，通常被称为Retigabine，其分子式为(I)，以及其药用可接受盐，例如分子式IA，特别是相对于美国专利US5384330中披露的先前工艺-I和II的改进。这些改进分别在方案I和方案II中描述。本文还披露了制备工艺-I的中间体M、N和O的新工艺，以及工艺-II的中间体R、S、T的分子式，这些中间体用于制备分子式I的Retigabine及其药用可接受盐。
• Discovery of Novel Retigabine Derivatives as Potent KCNQ4 and KCNQ5 Channel Agonists with Improved Specificity
  作者：Lei Wang、Guan-Hua Qiao、Hai-Ning Hu、Zhao-Bing Gao、Fa-Jun Nan

  DOI：10.1021/acsmedchemlett.8b00315

  日期：2019.1.10

  Recent research suggests that KCNQ isoforms, particularly the KCNQ4 and KCNQS subtypes expressed in smooth muscle cells, are involved in both establishing and maintaining resting membrane potentials and regulating smooth muscle contractility. Retigabine (RTG) is a first-in-class antiepileptic drug that potentiates neuronal KCNQpotassium channels, but poor subtype selectivity limits its further application as a pharmacological tool. In this study, we improved the subtype specificity of retigabine by altering the N-1/3 substituents and discovered several compounds that show better selectivity for KCNQ4 and KCNQS channels. Among these compounds, 10g is highly selective for KCNQ4 and KCNQS channels without potentiating KCNQ1 and KCNQ2 channels. These results are an advance in the exploration of small molecule modifiers that selectively activate different KCNQ isoforms. The developed compounds could also serve as new pharmacological tools for elucidating the function of KCNQ channels natively expressed in various tissues.
• [EN] DIETHYL 4-(4-FLUOROBENZYLAMINO)-1,2-PHENYLENEDICARBAMATE, AND SALTS THEREOF<br/>[FR] 4-(4-FLUOROBENZYLAMINO)-1,2-PHÉNYLÈRIDICARBONATE DE DIÉTHYLE ET SES SELS
  申请人：MEDICHEM SA

  公开号：WO2011012659A3

  公开（公告）日：2011-03-31
• Discovery of a retigabine derivative that inhibits KCNQ2 potassium channels
  作者：Hai-ning Hu、Ping-zheng Zhou、Fei Chen、Min Li、Fa-jun Nan、Zhao-bing Gao

  DOI：10.1038/aps.2013.79

  日期：2013.10

  Retigabine, an activator of KCNQ2-5 channels, is currently used to treat partial-onset seizures. The aim of this study was to explore the possibility that structure modification of retigabine could lead to novel inhibitors of KCNQ2 channels, which were valuable tools for KCNQ channel studies. A series of retigabine derivatives was designed and synthesized. KCNQ2 channels were expressed in CHO cells. KCNQ2 currents were recorded using whole-cell voltage clamp technique. Test compound in extracellular solution was delivered to the recorded cell using an ALA 8 Channel Solution Exchange System. A total of 23 retigabine derivatives (HN31-HN410) were synthesized and tested electrophysiologically. Among the compounds, HN38 was the most potent inhibitor of KCNQ2 channels (its IC50 value=0.10±0.05 μmol/L), and was 7-fold more potent than the classical KCNQ inhibitor XE991. Further analysis revealed that HN38 (3 μmol/L) had no detectable effect on channel activation, but accelerated deactivation at hyperpolarizing voltages. In contrast, XE991 (3 μmol/L) did not affect the kinetics of channel activation and deactivation. The retigabine derivative HN38 is a potent KCNQ2 inhibitor, which differs from XE991 in its influence on the channel kinetics. Our study provides a new strategy for the design and development of potent KCNQ2 channel inhibitors.

  雷替加宾是一种KCNQ2-5通道激活剂，目前用于治疗部分性癫痫发作。本研究旨在探讨雷替加宾结构修饰能否产生新型KCNQ2通道抑制剂，这些抑制剂对于KCNQ通道研究具有重要价值。设计并合成了系列雷替加宾衍生物，并在CHO细胞中表达了KCNQ2通道。采用全细胞电压钳技术记录KCNQ2电流，通过ALA 8通道溶液交换系统将测试化合物送入记录细胞的外液中。共合成并电生理测试了23个雷替加宾衍生物（HN31-HN410）。其中，HN38是KCNQ2通道的最强抑制剂（其IC50值=0.10±0.05 μmol/L），效力比经典的KCNQ抑制剂XE991高出7倍。进一步分析显示，HN38（3 μmol/L）对通道激活无明显影响，但在超极化电压下加速了通道的去激活过程。相比之下，XE991（3 μmol/L）对通道激活和去激活的动力学没有影响。雷替加宾衍生物HN38是一种强效的KCNQ2通道抑制剂，其在通道动力学上的影响与XE991不同。我们的研究为设计和开发强效KCNQ2通道抑制剂提供了新策略。